Separate it.,Use 3,D tech.,Put something in it.,Remove ……

单项选择题A．Open.B．Happy.C．Self-protected.D．Humbl

填空题friends at work, family friends, friends on the softball team, etc

单项选择题If the distribution of a construction is functionally equivalent to that of one or more of its constituents, the construction is called ______.

单项选择题What is the character of British labor force

单项选择题______ is the capital of Scotland since the 15th century.